toolkit/javascript/d3/src/time/hour.js
author Nicolas Sauret <nicolas.sauret@iri.centrepompidou.fr>
Fri, 18 Apr 2014 14:31:58 +0200
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d3.time.hour = function(date) {
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  var offset = date.getTimezoneOffset() / 60;
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  return new Date((~~(date / 36e5 - offset) + offset) * 36e5);
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};
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d3.time.hour.utc = function(date) {
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  return new Date(~~(date / 36e5) * 36e5);
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};